Just for information for anyone it might help, I have booked tickets for our family (5 adults and 3 children) on the car ferry that goes from Hellelyst to Geiranger. The price is £42 per adult and £21 per child. I did a web chat with the company and you have to book the time there and back and you cannot catch and earlier ferry if you want to, the tickets can be cancelled and refunded up to 7 days prior to the trip. There are 330 seats to book, we are going at 9.30 and returning at 2pm. It takes and hour and five minutes according to the timetable.